1491963802 has 16 divisors (see below), whose sum is σ = 2626778880. Its totient is φ = 622131408.

The previous prime is 1491963791. The next prime is 1491963821. The reversal of 1491963802 is 2083691941.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439602 + ... + 1440637.

It is an arithmetic number, because the mean of its divisors is an integer number (164173680).

Almost surely, 2^1491963802 is an apocalyptic number.

1491963802 is a deficient number, since it is larger than the sum of its proper divisors (1134815078).

1491963802 is a wasteful number, since it uses less digits than its factorization.

1491963802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880285.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1491963802 is about 38625.9472634653. The cubic root of 1491963802 is about 1142.6663253487. Note that the first 3 decimals are identical.

The spelling of 1491963802 in words is "one billion, four hundred ninety-one million, nine hundred sixty-three thousand, eight hundred two".